Why is important (for determining the function of a membrane protein) to know if it spans the bilayer or appears only on one face of the membrane?


Why is important (for determining the function of a membrane protein) to know if it spans...
Match the descriptions with the correct membrane component Only spans one leaflet of the membrane Protein Phospholipid Can span both leaflets of a membrane Can anchor to the cytoskeleton inside the cell Small and amphipathic Can be attached to the surface of a membrane
This is for BIOCHEM.. 1. How can it be determined if a protein spans a membrane? 2. How is membrane asymmetry preserved?
In an alpha-helical protein that spans the cell membrane, __ would likely be in the center of the membrane while __ would likely be associated with the polar head groups and __ would likely be associated with the aqueous environment. (a) Trp, Asn, Ala (b) Leu, Gln, Asp (c) Tyr, Glu, Glu (d) Ile, Arg, Gln I believe the answer to be B or D but I need to explain it. I would think it would be D because the...
1. why might a protein have multiple domains. 2.why a protein might be comprised of more than one chain. 3.why a protein structure might show gaps when the real protein has none. 4.why a protein might bind nucleic acids. 5.why a protein might have disulfide bonds. 6. are ligands important for function or just artifacts of the structure process? 7. Why would the surface of a membrane-bound protein have a different polarity from a soluble one?
What is post-translational processing, and why is it important for protein function?
Please answer as many as you can. Will
rate!!
Across
4. Type of protein that spans the entire
membrane
5. One of the amino acid residues used to form
O-linked glycoproteins.
7. Newly synthesized phospholipids are
inserted into the _____ side of the smooth ER membrane.
8. Type of bond used to link membrane proteins
to a membrane lipid
10. One of the sugars that can be added to
phosphatidylinositol to make glycosylphosphatidylinosiol
12. Enzyme that joins fatty acids and...
This is a diagram of the plasma membrane. State the function of
each of the outlined parts.

a.
b.
c.
d.
e.
Outside plasma membrane carbohydrate chain hydrophilic heads hydrophobic tails phopspholipid bilayer filaments of cytoskeleton Inside cholesterol protein
The plasma membrane of E. coli is approximately 75% protein and 25% phospholipid by weight. It is known that the average membrane protein molecular weight is 50,000 Da and an average membrane phospholipid molecular weight is 750 Da. Calculate the number of membrane phospholipid molecules present per molecule of membrane protein number of membrane phospholipid molecules: 0.033 molecules Select the additional information that one would need to calculate the fraction of membrane surface covered by phospholipids. the average cross-sectional areas...
Why would amphipathic molecules in a lipid membrane drive the membrane to self-seal? Why don’t phospholipids flip flop across a lipid bilayer, from one side to the other?
1. (5 pts) Complete the following: a) An integral membrane protein that interacts with just one leaflet of the bilayer is referred to as is the main storage polysaccharide of plant cells. c) If AG is positive a reaction is said to be d) In sphingolipids, the fatty acid is connected to the backbone via linkage. e) is the set of metabolic pathways (including glycolysis) that breaks down molecules into smaller units. is the prosthetic group in E2 that facilitates...